Link-forming mechanism



Feb 27, 1923., I,

R. KOLSCH.

v LINK FORMINGMECHANISM.

4 SHEETS SHEET l- HLED JUNE 29,1929.

Feb; 27 1923.

R- KULSCH.

LINK. FORMING MECHANISM.

FILED JUNE 29,1920. 4 $HEET$.SHEET 2.

Feb. 27, 119236 1,4465%.

. R, K0 L3 0 H.

LINK FORMING MECHANISM.

FILED JUNE 29, 1920. 4 SHEETS-SHEET 3.

Feb 27, 1922., M 1,446,508.

' R. KOLSCH.

LINK FORMING MECHANISM.

FILED JUNE 29, I920. 4 SHEETS-SHEET 4.

Patented Feb. 2'7, i923.

UNETED PATENT @FFHQE.

REINI'IARD K6LSCH, OF PFOBZI-IEILVI, GERMANY, ASSIGNOR TO THE FIRM LOUIS KUPPENHEIM, OF PFOEZHEIM, GERIMANY.

LINK-FORMING MECHANISM.

Application filed June 29, 1920. Serial No. 392,897.

(G-RANTED UNDER THE PROVISIONS 01 THE ACT OF MARCH 3, 1921, 41 STAT. I4. 1313.)

To all whom it may concern Be it known that I, :REINHARD Koiison, a citizen of the German Republic, of Pforzheim, Germany, have invented certain new and useful Improvements in Link-Forming Mechanism (for which applications for patent have been filed in Germany, July 21, 1916, Patent No. 321,075; Austria, August 16, 1917, Patent No. 8 1,568; Hungary, September 22, 1917, Patent No. 72,856; Switzerland, August 17, 1917, Patent No. 87,792; Great Britain, August 29, 1917, Patent No. 166,171; and France, August 30, 1917, Patent No. 515,003); and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, and to reference characters marked thereon, which form a part of this specification.

This invention relates in general to a machine for the manufacture of rings, links, and meshes, which may either be connected with each other to form a chain, or a meshfabric, or may be singly employed for any purpose and in any manner whatever.

It is already known to produce rings and the like from an appropriately long or short piece ofwire which is grasped by a pair of tongs by means of which it is shoved forward into a matrix or a bending stamp or punch wherein the piece of wire is bent into the shape of a ring.

In particular the invention relates to certain improvements in the means for cutting off the proper length of wire from the end- 1 less wire fed into the device, and for bending that piece of wire into the form of a ring which is completely closed except at the place of the joint where the wire ends maybe united with each other in a separate stage, for instance by soldering or by weld-.

In my present improved device the tools necessary for forming the piece of wire into a ring are combined with each other in such a manner that the piece of wire cut off from the supply wire cannot possibly fall out of the device because that wire piece is further worked, i. e., preliminarily bent, within a sleeve receiving and containing the respec* tive tools, out of which it is shoved into a closing stamp completing the bending, or the formation of the ring respectively.

The device in question consists chiefly of a composite tool having an outer sleeve which holds the wire against a bending mandrel whilst a knife cuts off from the wiresuch a piece as is required for the formation of a ring, link or mesh. Said sleeve contains small tongs provided with elastic cheeks and adapted to be displaced in the said sleeve whereby the piece of wire is bent around a mandrel forming it into U-shape. The thus preliminarily formed ring or link is taken up by an appropriately shaped stamp located in said tong and co-operating with a semicircular member. After the bendingmandrel has disappeared, the stamp co-opcrating with the tongs pushes the thus bent wire-piece out of the sleeve and conducts it to the front of a suitably shaped closing stamp which grasps the wire-ends that now have become free and makes them contact with each other so as thereby to finish the ring or the like.

V hen manufacturing mesh-fabric the displacement of the half-finished ring toward the closing die may be used to cause the parallel ends of the U-shaped wire to first pass through, two adjacent rings or meshes of the previously formed inc-sh fabric.

In order to make my invention more clear, I refer tothe accompanying drawings in which similar letters of reference denote similar parts throughout the sev ral views and in which: A V

Fig. 1 is a side view of the machine for the manufacture ofmesh-tfabric, this ma chine being furnished with the invention in question;

Fig. 2 is a longitiulinal section on line Fig. 3;

Fig. is a plan of the parts shown in Figure 2; and

Figs. 4l6 show three different positions of the operating parts whilst producing the ring, some parts being shown in section.

The table 1" of the machine "carries a support 2 for a mainslide 3 upon which is mounted the main part of the new device, i. e., that for manufacturing the rings- The positionoi this device is shown in Figure 2'.

, 3. The bolt 10 terminates in an auxiliary slide or g lide piece'13provid'ed in enlarge: slide The shalt- 1 ca-i'ries'a crank arm 0 that is connected 'by 'aT'link d as an arm e on a shaft 7'; Shaft carries an actuating; arm y "lior a closi'nlg die 22 To the slide 3 is attached, by means of a lateralarm'le a small sleeve 15 which has wedge' shaped recesses 15' at its sides and oblong-"recesses"15 at its top ancb'bottom. This sleeve 'holdsthe wire 16wh1ch 1S moved forward by a 'ieeding device comprising a bipartite box co -a '-'(Fig.' "3) aga nst the bending mandrel 17, whereaijter apieceoit wire as required for aring is cuto'flj' by means of the knife b I The sleeve 15 "(Figs 2 and 3) contains a small tongs 2O whi'chunay be displaced within the sleeve, and; winch consists of't'wo elastic arms 21 that ai'e'fiu'ted at their inner surfaces and'are affixed to a small tube 25 secured to' a su'1aljl"standa1'd 'ZGX-On nected by a "screwihreaded' pin 27 with a small slide 2 8 movahly mounted upon the glide piece 13. This shearer-ms at'one 'end two small rails which are connected with e'a'cl'i other bya small screw-threaded bolt 30, in

tional. contact with an upright lug 31" oij' the glide piece 13, said lug being "sligl'itly clamped inby saidfrails. Thetiibe' 25 of the tongs 20 and its standard, 26 are, furthermore, guidedupon the'shaft ot a'die 23 provided within thet'ongsfl Said, die is inserted at one end in an appropriate bore of the slide 13 and carries asinall standard having a pin 33 upon which the standard 26 of the tongs 20 may be displaced' This connectionbetween the tongs 20 and thedic 23 serves only to prevent these parts from turning one with respect to the other.

The slide 3 has screwed to it two lateral plates 34, of which the front lateral lugs 36 and '36 take into'recesses35 o'f'the slide 28. The lug, 36 stops the front shoulder 7L and lug 36 stops the rear shoulder the plates 34heing slightlyoif-set to this end.

Theopera ti on ofthe device isas follows:

.Froln the position 01} rest shown inFigure 1 the slide 3 with all parts attached. to it 'inoves intoftheposition shown in Fig. 2 in which the sleeve 15 holds the wire'against the bending mandrel 17 whilst the piece of parallel 'eiidgb h ,p.

position the piece oi wire has been grasped by the tongs 20 and has been bent around the mandrel 17, the now u-shaped wire piece being received at its rear semi-circular part by the die 23; *The mandrel 17 now moves out of the path of the sleeve and of the tongs which maybe effected'ffor instance; by letting the bolt 21 Fig. that suppq ts the mandrel lever 18 move downwards, which may be doneby any ap'pr o'priatemeans that need not beshown an'ddescribed.

'The i'noveme'nt' of "the main slide proceeds the sleeve 15 withtheftongs 2Q and the die 23 advance thewirepiece1urther until the slide 3 is stoppedby a bolt 19 which is providedTat the slide pushing against a projection (not sho n) provided ifor this purpose. But as the oscillation bf the lever'5 proceeds further in the sam'e direason, only theslidele is further inoved, the spring 11 being at the safe time compressed, so that now'the tohgsgo advanced owing to its connection with th slide-by mean cf h' pa -i 25,26,2wm1;s also the die 23,, the l J-shapeolwire' piecebei ng taken along withthe tongs an die.

During the forward" movem n't ot the main slide 13, the tongs the die23 advance from the "end of the sleeve 15, (Fig. I it um d h t' l e h iiism is used in mal ing-iing mesh fabric, the"two c ermdvi e blank are passed during t 'isfmov'enient through two adjacentriiigs of such fabric.

At this moment the movement of the tongs 20 isstopped' when the real-edge o recess 35 strikes the lugs or steps 36.) pfoi cting into the i'e'cessfthe main slice 3' 7 i said being at rest. i

*The slide 28- with it the tongs stopped, the slide 13 which isorilyintiictional contact with slide '28jcontinu1es forward 'movement with the die 23, this moment or preferably antes before it, the closing die 22' has been movedfinto operating position, 5, to engagethe'paialllel eiids of the wire blank to also passfthroil lr the two adjacent ringlets that" be joined togethel." bv' he ri ng l e t ow being formed. "Asthe die 23, co ntjinuesits' iorward movement the parallel eiids '01. the blank areelosed. by tho-(H9 22, which is now stationary, Fig, 6, and are h piiig is, fin ished,"i. e toia ring, linltormeslil "A ter this the 'di e s 22:, tongs 20 and sleeve 15, are; moved b acltf into -finitiel P sit he ome 11 sisti' ia h Pa tsto return to initial position, i g, 1. The ring, or meshma lthe be advanced by any desired"newspaper-awr to being 110 Y the formation of a new link or ring which means forms no part of the present invention and need not be illustrated or described.

Having now described my invention, What I desire to secure by a patent of the United States is:

1. In mechanism for forming links and the like, a mandrel, a main slide, a sleeve thereon having lateral forks for holding a wire length against said mandrel during cutting, an auxiliary slide movable on the main slide, a small slide frictio-nally con nected with said auxiliary slide, wire em bracing tongs in said sleeve mounted on said small slide and a die member Within said tongs mounted on said auxiliary slide.

2. In mechanism for forming links and the like, a main slide, a sleeve thereon having lateral forks holding a wire length against mandrel during cutting, an auxiliary slide spring held in said main slide, a. small slide frictionally connected to the aux-- iliary slide, tongs in said sleeve carried by said small slide, a die member Within said tongs mounted on said auxiliary slide and a single lever operating to move the auxiliary slide and thereby the other two slides.

3. In .mechanism for forming links and the like, a closing die, means to advance and retract said die from link forming position, in combination with a mandrel, a main slide, a sleeve thereon having lateral forks for holding a Wire length against said man-- drel during cutting; an auxiliary slide, spring connected tosaid main slide, a small slide moved by said auxiliary slide, tongs in said sleeve carried by said small slide, a die member within said tongs mounted on said auxiliary slide, a single lever operating to move said auxiliary slide and thereby the other two slides, and levers connected to the aforesaid lever and closing die means for simultaneous actuation.

In testimony whereof I have allixed my signature.

REINHARD KoLsoH.

In the presence of-- MARIE DANZ, KARL T. LUMM. 

